Superscope EC-5 Cardioid Condenser Microphone

Greetings, Campers-
I am thinning out a bunch of stuff I haven't touched in years.
These are a pair of mics I bought in 1979 for my Sony R-to-R. They worked fine, but some 32 years later, I have no clue as to their relative (to current recording technology) value. I'll take a stab at $20.00 each, but may be all-wet.
Anyrate, I'm posting these critters here, if there's no interest within a week-or-so, I will reconsider my options.
So, as Mr. Gleason said it best, "And away we go!"

Shipping shouldn't be too awful on these. Not sure if I can get them both into a USPS flat-rate box, or not. I'll look into it, though.

Thanks for looking!